'''
if else 语句学习
'''
age = int(input("输入你的年龄：") )
# age = int(input() )
print("") #起换行作用类似printf("\r\n") 

if (age<0):
    print("哎妈，真吓银啊！ 哪有年龄小于0岁的")
elif age == 1:
    print("小婴儿你好！，真棒都会玩电脑了")
elif (age>1) and (age<3):
    print("小宝宝你好！")
elif (age>=3) and age<6:
    print("小朋友你好！")
else:
    print("老不死的，滚一边去！") 


# input("按enter 退出")



